US4148680A - Tire building machine - Google Patents

Tire building machine Download PDF

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Publication number
US4148680A
US4148680A US05/884,945 US88494578A US4148680A US 4148680 A US4148680 A US 4148680A US 88494578 A US88494578 A US 88494578A US 4148680 A US4148680 A US 4148680A
Authority
US
United States
Prior art keywords
bead
drum
tire
core
apex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/884,945
Other languages
English (en)
Inventor
Norman B. Harding
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Priority to US05/884,945 priority Critical patent/US4148680A/en
Priority to CA320,506A priority patent/CA1115192A/fr
Priority to FR7903202A priority patent/FR2419157A1/fr
Priority to AU44308/79A priority patent/AU521979B2/en
Priority to GB7906106A priority patent/GB2015939B/en
Priority to DE2907409A priority patent/DE2907409C2/de
Priority to BR7901338A priority patent/BR7901338A/pt
Priority to LU81017A priority patent/LU81017A1/fr
Priority to JP54027227A priority patent/JPS6040373B2/ja
Application granted granted Critical
Publication of US4148680A publication Critical patent/US4148680A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3207—Positioning the beads

Definitions

  • the present invention relates to tire building machines and particularly to novel and useful means for positioning a tire bead about a tire carcass band disposed in cylindrical form about a tire building drum.
  • An apparatus in accordance with the present invention finds particular utility in properly disposing a bead circumferentially about a tire carcass band which is disposed in cylindrical form about the drum at a diameter less than the diameter of the tire bead. This arrangement is sometimes referred to as a negative crown building drum or tire building procedure.
  • a primary object of the invention is to improve the accuracy and reliability with which a bead is seated to be incorporated in the tire carcass.
  • FIG. 1 is a view in axial cross-section of an apparatus in accordance with the invention
  • FIG. 2 is a view also in axial cross-section illustrating the apparatus of FIG. 1 in bead-seating register with a portion of a tire building drum.
  • the apparatus 10 illustrated includes a first annular member 12 disposed coaxially of a tire building drum 14 and fixed to a stationary portion of the tire machine (not shown) at a location spaced apart from the drum.
  • the member 12 is provided with a cylindrical surface 16 which is concentric with the axis 18 of the drum and which surface serves to locate the tire bead 20, and particularly the inextensible bead core 22, concentric with respect to the axis of the drum.
  • the first member 12 may also include the surface 16 extending at spaced intervals circumferentially of the first member and lying in a plane normal to the axis of the drum.
  • the outermost surface of the first member is limited to a radius which is less than the innermost radius of the second member 25.
  • the second member is mounted for movement relatively and coaxially of the drum and of the first member and is provided with a radially inner surface 26 which is spaced radially outward of the outer surface of the first member.
  • a plurality of air cylinder devices 32 In order to move the second member 25 between a first position disposed circumferentially about the first member, as illustrated in FIG. 1, and a second position as shown in FIG. 2 wherein the bead is disposed in axial register with a bead-seating groove 30 of the tire drum, a plurality of air cylinder devices 32 have their respective piston rods 34 attached to the second member so that the second member is moved by extension and retraction of the piston rods in the respective cylinders.
  • the cylinders themselves are fixed on the stationary portion of the tire building machine (not shown).
  • the second member is provided with an axially facing surface 36 which is oriented toward the tire drum and preferably is inclined with respect to the drum axis to accommodate the inclination of the surface of the apex portion 38 of the bead.
  • the apex portion of the assembled bead is of an uncured and easily deformed rubbery compound.
  • the axially facing surface is provided with a plurality of recesses 41 sunk in the surface 36 in an equally spaced circular array concentric with respect to the axis.
  • Each recess accommodates a suction cup 43 the lips of which protrude outwardly from the surface sufficiently to engage and to seal to the surface of the apex so that suction may be applied to a plurality of local areas of the apex radially outwardly of the bead core.
  • annular passage 45 in the second annular member is connected by individual passages 47 to the respective suction cups and by a pipe 49 or hose connection to a vacuum pump or equivalent, not shown.
  • a plurality of fingers 51, 8 in the present apparatus are equally angularly spaced in a circular array. Each finger is pivotally mounted on a pivot pin 53 so that each finger is swingable in a plane containing the axis of the tire drum.
  • the front faces 55 of the fingers namely, the faces oriented toward the tire building drum lie in a common plane normal to the axis which plane, in the position illustrated in FIG. 1, coincides at least approximately with the plane of the bead core locating surfaces 24.
  • Each of the fingers is provided with a torsion spring 57 to bias the respective fingers to the position shown, that is, coplanar with the bead-locating surface. Minor adjustments of the position of the respective fingers is conveniently accommodated by an adjusting screw 59 in a tapped hole in a flange of the second annular member as is illustrated in FIG. 1. The face of each finger is extended radially inwardly to about the mean diameter of the inextensible bead core.
  • a tire bead assembly which for simplicity is referred to here and in the claims as the bead, is formed by uniting an inextensible bead core comprising the conventional plurality of turns of wire or the like, with an apex formed of uncured but curable rubber of a suitable composition.
  • the tire bead is prepared by methods and apparatus forming no part of the present invention.
  • the bead so assembled is disposed concentrically about the axis of the drum by positioning the core 22 on the bead-locating surface 16 of the first member so that the bead also engages the locating surfaces 24 in the plane normal to the axis.
  • the apex of the bead, as assembled, extends upwardly and is inclined or curved toward the building drum.
  • the surface of the apex lies touching or close to the lips of the respective suction cups 43 so as to seal the suction area of the suction cups to corresponding portions of the apex surface.
  • suction is supplied in the annular passage 45 so that the apex itself is held by the suction cup sufficiently to avoid radial displacement of the bead.
  • the radially inner portion of the bead then lies against the faces 55 of the respective fingers.
  • the second annular member 25 is moved by the cylinders 32 coaxially of the drum 14 so as to position the bead and particularly the bead core coaxially of and in appropriate register with the beadseating groove 30 of the drum. It should be noted that the tire carcass band lies on the drum radially inwardly of the inner periphery of the bead. It is also to be noted that during movement of the bead from the first position (FIG. 1) of the member 25 surrounding the first annular member 12 to its second position illustrated in FIG. 2 surrounding the beadseating groove, the bead core is supported by the apex alone against any radial displacement.
  • the endless elastic member 61 disposed circumferentially of the drum is expanded by a plurality of segments 63 which are spaced circumferentially about the drum and underlie the elastic member.
  • the expansion of the groove in the member 61 overlying the segments causes the tire carcass band to conform to the bead, particularly the bead core thereof so as to partially envelop the bead.
  • this partial envelopment of the bead also envelops the radially inner extremities of the fingers 51. Because the bead is now held securely in its enveloped relation with the tire carcass band, the second annular member can now be moved axially away from the bead.
  • the fingers are allowed to swing in axial planes so that their radially inner extremities are withdrawn both axially and radially outwardly with respect to their initial position adjacent the bead core without in any way disturbing the accurate position given to the bead with respect to the tire carcass band.
  • the suction pressure within the suction cups and passages is released immediately prior to the movement of the second member so that the entire bead remains in its desired axial register with respect to the carcass band.
  • the second member 25 is then returned to the position illustrated in FIG. 1 to repeat the cycle.
  • the stiffness of the torsion springs which control the position of the fingers should be sufficient only to insure that the fingers are restored to the position illustrated in FIG. 1 but less than sufficient to displace any part of the carcass band over which they are drawn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
US05/884,945 1978-03-09 1978-03-09 Tire building machine Expired - Lifetime US4148680A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US05/884,945 US4148680A (en) 1978-03-09 1978-03-09 Tire building machine
CA320,506A CA1115192A (fr) 1978-03-09 1979-01-30 Machine a fabriquer les pneumatiques
FR7903202A FR2419157A1 (fr) 1978-03-09 1979-02-08 Machine de confection de pneumatiques
AU44308/79A AU521979B2 (en) 1978-03-09 1979-02-16 Positioning bead cores held by suction cups
GB7906106A GB2015939B (en) 1978-03-09 1979-02-21 Tyre buolding machine
DE2907409A DE2907409C2 (de) 1978-03-09 1979-02-23 Wulstkernsetzvorrichtung für eine Reifenaufbautrommel
BR7901338A BR7901338A (pt) 1978-03-09 1979-03-06 Maquina para fabricacao de pneumaticos
LU81017A LU81017A1 (fr) 1978-03-09 1979-03-08 Machine de confection de pneumatiques
JP54027227A JPS6040373B2 (ja) 1978-03-09 1979-03-08 タイヤ組立て機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/884,945 US4148680A (en) 1978-03-09 1978-03-09 Tire building machine

Publications (1)

Publication Number Publication Date
US4148680A true US4148680A (en) 1979-04-10

Family

ID=25385784

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/884,945 Expired - Lifetime US4148680A (en) 1978-03-09 1978-03-09 Tire building machine

Country Status (9)

Country Link
US (1) US4148680A (fr)
JP (1) JPS6040373B2 (fr)
AU (1) AU521979B2 (fr)
BR (1) BR7901338A (fr)
CA (1) CA1115192A (fr)
DE (1) DE2907409C2 (fr)
FR (1) FR2419157A1 (fr)
GB (1) GB2015939B (fr)
LU (1) LU81017A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293358A (en) * 1980-05-07 1981-10-06 The Firestone Tire & Rubber Company Method and apparatus for accurately positioning a bead bundle
US4309235A (en) * 1980-07-09 1982-01-05 National-Standard Company Retractable bead setter assembly and method of operation thereof
US5300180A (en) * 1993-06-10 1994-04-05 Bridgestone/Firestone, Inc. Magnetic tire bead setter
US6630045B1 (en) 1999-03-25 2003-10-07 The Goodyear Tire & Rubber Company Combined bead loading and apex application system
WO2009063264A1 (fr) * 2007-11-15 2009-05-22 Pirelli Tyre S.P.A. Processus de fabrication de pneumatiques pour roues de véhicule et appareil de construction d'une structure de carcasse d'un pneumatique pour roues de véhicule
US20100043947A1 (en) * 2008-08-21 2010-02-25 Vmi Holland B.V. Method for transferring and placing beads for tyres, device for carrying out such a method and spacer to be used in such a method and/or device
US20100043952A1 (en) * 2007-03-13 2010-02-25 Bridgestone Corporation Apparatus and method for transferring bead member
RU2445212C2 (ru) * 2007-11-15 2012-03-20 Пирелли Тайр С.П.А. Способ изготовления шин для колес транспортных средств
US20150108780A1 (en) * 2013-10-18 2015-04-23 Bartell Machinery Systems, L.L.C. Systems and methods for gripping and handling a bead apex
US9168709B2 (en) * 2008-12-11 2015-10-27 Pirelli Tyre S.P.A. Process and apparatus for manufacturing tyres for vehicle wheels
US20160176138A1 (en) * 2014-12-23 2016-06-23 The Goodyear Tire & Rubber Company Sleeveless tire building drum
WO2021099224A1 (fr) * 2019-11-20 2021-05-27 Herbert Maschinen- und Anlagenbau GmbH & Co. KG Système de positionnement et procédé de production de pneus de véhicule

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0518448Y2 (fr) * 1986-01-24 1993-05-17

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121653A (en) * 1960-08-16 1964-02-18 Dunlop Rubber Co Type building machines
US3687779A (en) * 1969-02-19 1972-08-29 Goodyear Tire & Rubber Tire building apparatus with inflatable turn-up bladder
US3721600A (en) * 1970-08-19 1973-03-20 Nrm Corp Tire building machine
US3944456A (en) * 1974-05-06 1976-03-16 Nrm Corporation Tire building machine
US4007080A (en) * 1974-02-28 1977-02-08 Continental Gummi-Werke Aktiengesellschaft Device for transferring tire carcasses from a tire building-up station to a forming station
US4053342A (en) * 1972-06-28 1977-10-11 The Goodyear Tire & Rubber Company Tire building system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1579239C3 (de) * 1965-03-06 1973-12-13 Dunlop Ag, 6450 Hanau Vorrichtung zum Aufbringen der Wulstkerne auf eine Luftreifenkarkasse
FR1519770A (fr) * 1966-03-19 1968-04-05 Continental Gummi Werke Ag Machine pour la fabrication de pneumatiques d'automobiles ainsi que pneumatiques conformes à ceux obtenus
DE2134904B1 (de) * 1971-07-13 1973-01-04 Leonhard Herbert Maschinenfabrik, 6000 Bergen-Enkheim Einrichtung zum Aufbauen und Formen eines Rohlings für Gürtelreifen
DE2140923C3 (de) * 1971-08-16 1975-06-26 Continental Gummi-Werke Ag, 3000 Hannover Maschine zum Herstellen von Karkassen für Fahrzeugluftreifen
BE790576A (fr) * 1971-11-17 1973-02-15 Gazuit Georges Perfectionnements aux machines a confectionner les pneumatiques
IT1060436B (it) * 1976-05-12 1982-08-20 Pirelli Dispositivo di spostamento cerchietti

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121653A (en) * 1960-08-16 1964-02-18 Dunlop Rubber Co Type building machines
US3687779A (en) * 1969-02-19 1972-08-29 Goodyear Tire & Rubber Tire building apparatus with inflatable turn-up bladder
US3721600A (en) * 1970-08-19 1973-03-20 Nrm Corp Tire building machine
US4053342A (en) * 1972-06-28 1977-10-11 The Goodyear Tire & Rubber Company Tire building system
US4007080A (en) * 1974-02-28 1977-02-08 Continental Gummi-Werke Aktiengesellschaft Device for transferring tire carcasses from a tire building-up station to a forming station
US3944456A (en) * 1974-05-06 1976-03-16 Nrm Corporation Tire building machine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293358A (en) * 1980-05-07 1981-10-06 The Firestone Tire & Rubber Company Method and apparatus for accurately positioning a bead bundle
US4309235A (en) * 1980-07-09 1982-01-05 National-Standard Company Retractable bead setter assembly and method of operation thereof
US5300180A (en) * 1993-06-10 1994-04-05 Bridgestone/Firestone, Inc. Magnetic tire bead setter
US6630045B1 (en) 1999-03-25 2003-10-07 The Goodyear Tire & Rubber Company Combined bead loading and apex application system
US20100043952A1 (en) * 2007-03-13 2010-02-25 Bridgestone Corporation Apparatus and method for transferring bead member
RU2445212C2 (ru) * 2007-11-15 2012-03-20 Пирелли Тайр С.П.А. Способ изготовления шин для колес транспортных средств
US9409360B2 (en) * 2007-11-15 2016-08-09 Pirelli Tyre S.P.A. Process for manufacturing tyres for vehicle wheels and apparatus for building a carcass structure of a tyre for vehicle wheels
US20100276068A1 (en) * 2007-11-15 2010-11-04 Maurizio Marchini Process for manufacturing tyres for vehicle wheels and apparatus for building a carcass structure of a tyre for vehicle wheels
WO2009063264A1 (fr) * 2007-11-15 2009-05-22 Pirelli Tyre S.P.A. Processus de fabrication de pneumatiques pour roues de véhicule et appareil de construction d'une structure de carcasse d'un pneumatique pour roues de véhicule
US11312095B2 (en) 2007-11-15 2022-04-26 Pirelli Tyre S.P.A. Apparatus for building a carcass structure of a tire for vehicle wheels
US10322553B2 (en) 2007-11-15 2019-06-18 Pirelli Tyre S.P.A. Apparatus for building a carcass structure of a tyre for vehicle wheels
US8794288B2 (en) * 2008-08-21 2014-08-05 Vmi Holland B.V. Method for transferring and placing beads for tyres, device for carrying out such a method and spacer to be used in such a method and/or device
US8932420B2 (en) 2008-08-21 2015-01-13 Vmi Holland B.V. Method for transferring and placing beads for tyres, device for carrying out such a method and spacer to be used in such a method and/or device
US20100043947A1 (en) * 2008-08-21 2010-02-25 Vmi Holland B.V. Method for transferring and placing beads for tyres, device for carrying out such a method and spacer to be used in such a method and/or device
US9168709B2 (en) * 2008-12-11 2015-10-27 Pirelli Tyre S.P.A. Process and apparatus for manufacturing tyres for vehicle wheels
US9126340B2 (en) * 2013-10-18 2015-09-08 Bartell Machinery Systems, L.L.C. Systems and methods for gripping and handling a bead apex
US20150108780A1 (en) * 2013-10-18 2015-04-23 Bartell Machinery Systems, L.L.C. Systems and methods for gripping and handling a bead apex
US20160176138A1 (en) * 2014-12-23 2016-06-23 The Goodyear Tire & Rubber Company Sleeveless tire building drum
WO2021099224A1 (fr) * 2019-11-20 2021-05-27 Herbert Maschinen- und Anlagenbau GmbH & Co. KG Système de positionnement et procédé de production de pneus de véhicule

Also Published As

Publication number Publication date
CA1115192A (fr) 1981-12-29
FR2419157A1 (fr) 1979-10-05
BR7901338A (pt) 1979-10-09
DE2907409C2 (de) 1987-03-19
JPS54135873A (en) 1979-10-22
DE2907409A1 (de) 1979-09-13
FR2419157B1 (fr) 1982-10-29
GB2015939A (en) 1979-09-19
GB2015939B (en) 1982-08-18
AU4430879A (en) 1979-09-13
AU521979B2 (en) 1982-05-13
LU81017A1 (fr) 1979-06-18
JPS6040373B2 (ja) 1985-09-10

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